Delete specific lines in a file from Python

Question

I have a text file with multiple lines of text. What I would like to do is to search that file for a specific word and if that line does contain that word, how do I delete that line only. (Python)

Answer 1

To remove lines that contain a word in the files given on the command-line:

#!/usr/bin/env python3
import fileinput

word = 'put your word here'
for line in fileinput.input(inplace=True):
    if word not in line:
       print(line, end='') # keep the line